I assume that the "AR" is Argentina and NOT Arkansas, LOL. unfortunately the positioning of the major north American mountain ranges (cascades/sierra Nevada and the Rockies) are probably major (negative) influences for the climate and growing conditions of the Midwest and east coast. those mountains do a great job of blocking milder air from the west----and a poor job of blocking cold air from the north. OTOH, the dominance of relatively mild air WEST of those mountains allow gardeners on the west coast to often "get away" with some plants that their friends on the east coast at the same latitude often have problems with. oh, the inequalities, challenges, and tribulations of our continents' climates!!!